I'm continuing to search for a suitable walk around zoom for use with the Sony a6500, having tried and rejected both the Zeiss 16-70 and the Sony 28-70 . It occurred to me that I had some old film era zooms lurking in the cupboard, and the most promising of the collection appeared to be the Tamron SP 28-80. If you are not familiar with Tamron Adaptall lenses, they were supplied with a range of adapters to suit the most popular makes of film camera. I possess a small collection of the these removable mounts, including M42, Pentax K, Olympus and Canon FD. The first mount I tried was the M42, it was nice and secure, but, in use, I quickly realised that I was unable to focus at a focal length of 28 mm - circa 30 mm and beyond were fine. Next came the Pentax, and that was better, but not perfect. Finally the Olympus, and that was much better, but the closest I can focus at 28 mm is about 1 m. Here is what the lens looks like mounted on the camera, click for a bigger image. ...